I seem to have found the feeling and eager of turning back to the developing.

     I think I must have been degenerated. I have not doing the things about discrete mathematics for nearly 2 days. Then what I was doing this two days? It seems not too back that I was still doing something useful, such as going out to meet my good old friend, wandering the internet reading some articles about IT. Something I read today leads to today's blog.
     Today I visited http://www.jdon.com/. Articles written there are valuable guiding me how to construct a rational application especially that works with databases. In the website, I was navigated to another website http://ibatis.apache.org, in which it was said to have a best edition of Petstore demo for the browser to download. In order to see what the best demo would be, I scaned the website and soon found what I was looking for. Since what I am familiar with most is .NET not Java, I downloaded the .NET edition which is named NPetshop. The demo downloaded, I found it was a distributed application having a clear structure. After a few minutes' scaning, I told myself this demo should be treasured up.
     Months ago, I was very eager to learn and practise the new developing techniques, but now I'm not. The eager is still exist, but not as strong as before. That's because I think I should learn the basis firmly instead of chasing the new techniques. A building without a firm infrastructure won't be appreciated.